Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5fd6499948f12d…

MALICIOUS

PDF

49.2 KB Created: 2020-08-21 21:30:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57c793d8e159944c095f9490641bf053 SHA-1: e229bbc679b82214082400bbdbdf1841ecd6bbb3 SHA-256: dc5fd6499948f12d78deefb365f4c48b946cab5d2f352c9f5fc2656c0fc59b58
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=vidmate+video+er+app+apk'. This URL is embedded within the document body, disguised as a download for the Vidmate app. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary intent appears to be redirecting users to malicious infrastructure.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=vidmate+video+er+app+apk
    • http://files.colinbergmusic.com/uploads/1/3/0/8/130874055/suwakipuxexodi.pdf
    • http://files.dbollywoodrestaurant.com/uploads/1/3/1/6/131606630/paxirus.pdf
    • http://files.davidslandscapes.com/uploads/1/3/1/3/131380000/basinafulizepet.pdf
    • http://marugiki.kindkatbeauty.com/uploads/1/3/1/3/131398455/tuxowuginapizomuna.pdf
    • http://files.sacredvesselacupuncture.com/uploads/1/3/1/3/131398286/pisojagupipu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/zutikojofozijis.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/5748381467.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/fekasodoz.pdf
    • https://cdn.shopify.com/s/files/1/0462/9010/8577/files/tatediseten.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/valusarebuzufebava.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/brahms_lullaby_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/1751/9772/files/85882254275.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/15394276028.pdf
    • https://cdn.shopify.com/s/files/1/0437/2227/7032/files/73889440608.pdf
    • https://cdn.shopify.com/s/files/1/0430/3349/3655/files/android_9_pie_su_s7_edge.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/degree_of_freedom_mechanics.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/95923203875.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bae.bin
cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAE 2952 bytes
font_01_sfnt_off0000763d.bin
82e314a3f1804f737e82dab157990ee8cabec2272d0e313c33a86dfba709c5a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763D 4668 bytes
font_02_sfnt_off0000861b.bin
de5b8aa00fb30466f916894b94247c112045e9204a440e54c88b18d2d9a52d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861B 10308 bytes
font_03_sfnt_off0000a958.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA958 4324 bytes

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